Sealing machine for boxes



Nov. 19, 1929. E. WALKER SEALING MACHINE FOR BOXES Filed ug- 1927 4 Sheets-5heet- 1 INVENTOR.

' ATTORNEYS.

Nov. 19, 1929. E. WALKER SEALING MACHINE FOR BOXES Filed Aug- 2 1927 4 Sheets-Sheet 2 .xl mil a mn MM wk I N YEN TOR ATTORNEYS.

Nov. 19, 1929. E. L. WALKER I i t- 1,736,130

SEALING MACHINE FOR BOXES I Filed Aug. 24, 1927 4 Sheets-Sheet 3 lip INKENTOR ATTORNEYS.

Nov. 19, 1929. L, WALKER 1,736,180

SEALING MACHINE FOR BOXES Filed Aug- 24. 1927 4 Sheets-Sheet 4 BY I . ATTORNEYS.

INVENTOR Patented Nov. 19, 1929 wa s EMERY 1.. ALKER, or vwirevm'rosA, Wiscons n, nssrenon "ro Km mmee conrmmnn 00., or MILWAUKEE, Wisconsin, a COBPGRATION- er MAINE SEALING MAoriINn non Boxes I Application filed August 24, 1927. Serial No. 215251.

"were manually held in place while the adhesive strips were applied and several persons wererequired for this operation.

' v It is, therefore-the primary object of the 7 present invention to provide a machine which eliminates the abovev Objections by firmly mechanically clamping the cover of a box against the body portion and so holding it for any desired period while gummed sealing strips are applied and adhered.

" A further objector the mvention is to provide a box sealing machine which will accommodate boxes of various sizes.

A further object of the invention is to provide a box sealing machine having two pairs of covercla'mping arms which are operated simultaneously by two systems of equalizing levers, said equalizing levers being controlled by an operatingleverfwhich may be locked any position of'adjustment.

A further object of the invention is to provide a box sealing maohine arranged so that boxes may be delivered thereto and removed therefrom by a conveyor. I

A further object of the invention is to pro vide-a box sealing-machine which is simple in construction. and operation, is strong and durable,;and is well adapted for the purposes described. p v v WVith the a'boveand other objects in iew the invention consists of the improved box sealin machine, and its parts and combina- 'tionsa js set forth in theclaims, and all equivalents thereof. 1 I

I, In the accompanying drawingsin {which the same reference characters indicate the sameparts infall of the views;

i 1 a plan View of the improved tax sealing machine I Fig. 2 'a side View thereof indicated on line 22 of Fig. 1;

v Fig. 3 is a verticalsectional"view taken on Fig. 4- is an inverted view indicated l on line 44 e f Fig. 2.

Reierring now more particularly to the drawings it will be seen that themachi-ne "includes atable 8 having an'elev'ated horizontal top 9 supported by legs 10. Mounted on the top 9 iisa track orconveyor 11, comprising a pair of spaced longitudinally extending angle iron members 12 bolted t'o thetable top and having journaled therein-the pork .tlons of transverse rollers 13, the rollers be ing ofa diameter so as to project slightly above the top'edg'es of the angle ironmeinbers 12. Also, the rollers are arranged in groups, a central group over the mid-portion of the table top, and agroup at each end thereof. The table top 9 is provided with a pairo't opposed end longitudinal slots l hlbetw'e en the groups of rollers, and a pair of opposed side transverse slots 15. Extended through each slot 1.4: is abox end clamping arm 16 having a transverse engaging head portion 17 whilea similar box side clamping arm 18 is extended through each slot 15,"each:ar1n 1'8 having a transverse engaging head portion 19.

The end clamping arms 16 are iorm e'd of two adjacent members 16 and 16', the mem, bers 16 being-guide members and pivot ny;

connected'at their lower end portions to -brackets QOextendin'g from the lower portions or" the table. Also, the members11'6 are provided with projecting guide :bolts 21 extended through slots 22 in the members 16, the members 16' being, therefore, longitudinally slidable with respect "to the members 16 andpivotal therewith. The head poi 'tions 17 of the clamping Farms 16 are fixed t0 the slidable members 16".

Themeans for causing the members 16 to be moved longltudlnally on the guide 'm'embers 16" comprise a lever 23 'p'ivotallymount ed at its inner end portion onfa rod 24 mount-1 ed lengthwise in the lowerportion 'o'fthe table. Said lever extends outwardly from a side of the table and is formed at its outer end portion with a foot'pedal portion 25. The intermediate portion of a chain 26 is secured to .an outer portion of the lever 23 and each end portion of the chain is secured to a lug 27 projecting from a lower portion of a slidable arm member 16. Intermediate portions of the chain extend over pulleys 28. The normal position of the arms 16 is as shown in Fig. 3 with the head portions 17 below the upper level of the rollers 13 so as not to interfere with a box moved along the conveyor, or tracks. However, if the foot pedal 25 is depressed, the chain 26 will be pulled and the arm members 16- will be longitudinally moved and raised on the guide members 16 and will, be projected above the track, as shown in dotted lines in Fig. 2.

Each of the arms 18 is pivotally connected at its lower end portion to a bracket 29 extending from the lower portion of the table.

The normal position of said arms is as illus trated in Figs. 1 and 3, the head portions 19 being abovethe top of the angle members 12 and at the sides thereof, not-interfering, when in this position, with the passage of a box along the track over the rollers.

Extended transversely through the lower portionof the table is a revolubly mounted rod 30 and keyed to one end portion thereof,

adjacent the foot pedal 25, is the lower end portion of an upwardly extending operating lever 31. A lever 32 is also mounted fast on'an intermediate portion of the rod 30 and pivotal-1y secured to the bifurcated upper end portion 3250f the lever 32 is one end portion of alink 33. Pivotally secured to the other end portion of the link 33 is a link 34 and also an arc shaped link 35. A pivot bolt 36 depends centrally from the table top and loose ly. centrally mounted thereon and retainedby a'nut 37 is a straight lever 38 and a bifurcated or forked lever 39.

] to the arm 40, and said arm 42- is pivotally connected, as at 43, with the other end clamping arm 16. v

' One end portion of the forked lever 39 has pivotally connected thereto an arm 44 which extends to one of the side clamping arms 18 and ispivotallyconnectedthereto, as at 45 and the opposite end portion of the lever 39 has pivotally connected thereto a similar arm 46 which extends to and is pivotally connected to, as at 47, the other side clamping arm 18. The end of the forked portion 39 of the lever presses it.

,39 is pivotally connected with members 33 links 34 and 35, both pairs of arms 40, 42, and

44, 46, will be drawn inwardly, thereby moving the upper engaging portions of the pairs of clamping arms 16 and 18 inwardly. By reference to Figs. 1- and 2 it will be seen that the operating lever 31 is provided with a yieldable locking plate 48 and the side of the table along which the lever 31 moves has se-v cured thereto a serrated member 49 so that the lever 31 may be releasably locked in any adjusted clamping position by the engage ment of the plate 48 with any of the notches of the member 49. r

In use, a box to be sealed is delivered up-' side down onto the angled members 12 and is pushed over therollers to the central group of rollers 13, it being remembered that the arms v16 are normally in a lowered position so as not to interfere. When the boxis thus positioned, asindicated at 50 in Fig. 2, the, operator steps on the footpedal 25 and de- Through the lever 23 and chain, 26the arm members 16 are raised as pre viously described. -Then, the .operating'le ver 31 is moved to the right in Fig. 2 and throughthe systems of equalizing levers described the arms 16 and 18 are moveduntil their head portions firmly engage the sides and ends of the cover of the box, as shown in Fig. 2. The lever 31 is then looked to hold the arms in this position and gummed strips may be readily applied to the box to seal the cover to the body.

From the foregoing description it will be i seen that the improved box sealing machine is of simple and novel construction, and is well adapted for the purpose set forth.

, What I claim as my invention is 1. A box sealing machine, comprising a base member, a pair of opposed clamping members mounted therein and movable upwardly and longitudinally of the base member, a 'secondpair of opposed clamping members mounted in the base member and movable transversely thereof, and means ,for

jointly pivotally movingsaid clamping members toward a central point.

2. A box sealing machine, comprising a base member having a longitudinal conveyor of which a portion serves as a box supporting portion, two pairs of opposed clamping arms mounted in said base member and movable toward the edges of said box supporting portion, there also being a relative vertical movement between the pair of clamping arms positioned longitudinally of the conveyor and the latter, and connected means for jointly moving both pairs of arms toward said conveyor portion serving as a box supporting portion. j A

3. A box sealing machine, comprising a base member having a box conveyor of which a portion serves as a box supporting portion, a pair of opposed end clamping arms movable longitudinally ofthe conveyor toward each other, a pair of opposed side clamping arms movable transversely of the conveyor toward each other, means for moving the end clamping arms from a position below the top 7 v of the conveyor upwardly, and means for jointly operating said pairs of arms'to move the arms of each pair toward each other,

4. A box sealing machine, comprising a base member having a box supporting portion, a pair of'opposed end clamping arms movable longitudinally of the base member toward each other, a pair'of opposed'side clamping arms movable transversely ofthe base member toward each other, there being a relative vertical movement between the end clamping arms and the box supporting portion, means for causing the relative vertical movement between said pair of arms and the box supporting portion, and other means for jointly operating said pairs of arms to move the arms of each pair toward each other. I V

5. A box sealing machine, comprising a base member, a track mounted thereon and having a station portion centrally of the base member, a pair of opposed end clamping arm's movable longitudinally of the track toward each other, and normally in a lowered posi tion below the level of said track, a pair of V opposed side clamping arms movable transversely of the track toward each other, means for raising the end clamping arms, and other means for jointly operating said pairs of arms to move all of said arms inwardly toward the station portion.

6. A box sealing machine, comprising a base member, two pairs of opposed clamping arms pivotally mounted in said base menrber, the clamping portions of all of said arms being movable toward a central point, two

sets of equalizing levers directly connected connected with said armsfor raising the same, a pair of opposed side clamping arms pivotally mounted in the base member and movable transversely of the track toward each other, two sets of equalizing levers connected together andconnecting all of said arms for moving the same toward one another, lever means for jointly operating both sets of equalizing levers, and means for releasably locking said mechanism in arm engaging positions.

8. A box sealing machine, comprising a base member having a station portion, a pair of opposed end clamping arms movable longitudinallyof the station portion toward each other, a pair of opposed side clamping arms movable transversely of the station portion toward each other, there being a relative I vertical movement between the end clamp ing arms and'the station portion and said end clamping arms being normally disposed below the level of said station portion, means for causing the relative vertical movement 7 between said pair of arms and said station together and connecting all of said arms for moving the same slmultaneously, and other means for jointly operating both sets of said levers.

7. A box sealing machine, comprising a base member, a track mounted thereon and having a station portion centrally of the base member, a pair of opposed end clamping arms pivotally mounted in the base member and movable longitudinally of the track member toward each other and normally in av lowered position below said track, a lever 

